关键词: 驾驶安全, 分心驾驶行为识别, 级联卷积神经网络模型, 迁移学习

Abstract: Distracted driving behavior recognition is one of the main methods to improve driving safety. Aiming at the problem of low identification accuracy of distracted driving behavior, this paper proposes a driver distracted behavior recognition algorithm based on deep learning, which is composed of a cascade of target detection network and precise behavior recognition network. Based on the State Farm open data set, in the first level, the target detection algorithm SSD (Single Shot Multibox Detector) is used to extract local information from the original driver images in the data set and determine the candidate regions for behavior recognition. Then in the second level, the transfer learning VGG19, ResNet50 and MobileNetV2 models is used to accuratelyidentify the behavior information in the candidate region. Finally, the experiment compares the recognition accuracy of distracted driving behavior between layered recognition architecture and single model architecture. Results show that compared the proposed cascade network model with the mainstream model of single detection method, the driver behavior identification accuracy is improved 4% ~ 7% overall. Besides, the proposed algorithm not only reduces the influence of noise and other background regions on the model to improve the accuracy of distracted behavior recognition, but also can effectively identify more behavior categories to avoid the misclassification of actions.

Key words: driving safety, distracted driving behavior recognition, cascaded convolutional neural network model, transfer learning